"Starting Point" anchor Soledad O’Brien will host a townhall looking at the latest in a case that has consumed the conscious of the nation: the shooting of Trayvon Martin.

"Beyond Trayvon: Race & Justice In America" airs on Friday, March 30th at 8p and 10p ET on CNN.

The special will look at the latest in the investigation in the case, and examine the many angles that have come into play including: the investigation, allegations of racial profiling, gun laws and Florida’s Stand Your Ground law. The audience will also ask questions of experts in an effort to find the truth in the story.

The New Yorker's Ryan Lizza explains how Rep. Paul Ryan's endorsement of Mitt Romney will shape the GOP presidential race, if it means the GOP is finally coalescing behind one candidate and what happens to Rick Santorum in the process.

There's a new debate building about the cause of autism, fueled by new numbers from a CDC report showing a significant increase in the number of kids diagnosed with autism spectrum disorder.

The numbers are staggering: The latest report shows diagnoses are up 80% in the past decade. In 2000 and 2003, about one in 150 children were diagnosed with autism. The latest data suggests 1 in 88 children have autism.

Is there a real cause for concern here that the threat of autism is growing? Or are the diagnoses criteria becoming broader?

This morning on "Starting Point" Austim Speaks's chief scientific officer Geraldine Dawson, Ph.D. talks about the new study. She's joined by Glen Finland, author of "Next Stop" which chronicles her experience raising her son David, who has autism.